hwmon: f71882fg: add support for the Fintek F71808E

Allow device probing to recognise the Fintek F71808E.

Sysfs interface:
 * Fan/pwm control is the same as for F71889FG
 * Temperature and voltage sensor handling is largely the same as for
   the F71889FG
  - Has one temperature sensor less (doesn't have temp3)
  - Misses one voltage sensor (doesn't have V6, thus in6_input refers to
    what in7_input refers for F71889FG)

For the purpose of the sysfs interface fxxxx_in_temp_attr[] is split up
such that it can largely be reused.

Signed-off-by: Giel van Schijndel <me@mortis.eu>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 82 insertions, 11 deletions

diff --git a/Documentation/hwmon/f71882fg b/Documentation/hwmon/f71882fg
index a7952c2bd959..1a07fd674cd0 100644
--- a/Documentation/hwmon/f71882fg
+++ b/Documentation/hwmon/f71882fg
@@ -2,6 +2,10 @@ Kernel driver f71882fg
 ======================
 
 Supported chips:
+  * Fintek F71808E
+    Prefix: 'f71808fg'
+    Addresses scanned: none, address read from Super I/O config space
+    Datasheet: Not public
   * Fintek F71858FG
     Prefix: 'f71858fg'
     Addresses scanned: none, address read from Super I/O config space
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index c9e2aad34c8b..f3adf18bfa05 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -332,11 +332,11 @@ config SENSORS_F71805F
           will be called f71805f.
 
 config SENSORS_F71882FG
-        tristate "Fintek F71858FG, F71862FG, F71882FG, F71889FG and F8000"
+        tristate "Fintek F71808E, F71858FG, F71862FG, F71882FG, F71889FG and F8000"
         depends on EXPERIMENTAL
         help
-          If you say yes here you get support for hardware monitoring
-          features of the Fintek F71858FG, F71862FG/71863FG, F71882FG/F71883FG,
+          If you say yes here you get support for hardware monitoring features
+          of the Fintek F71808E, F71858FG, F71862FG/71863FG, F71882FG/F71883FG,
           F71889FG and F8000 Super-I/O chips.
 
           This driver can also be built as a module.  If so, the module
diff --git a/drivers/hwmon/f71882fg.c b/drivers/hwmon/f71882fg.c
index 537841ef44b9..6207120dcd4d 100644
--- a/drivers/hwmon/f71882fg.c
+++ b/drivers/hwmon/f71882fg.c
@@ -45,6 +45,7 @@
 #define SIO_REG_ADDR            0x60    /* Logical device address (2 bytes) */
 
 #define SIO_FINTEK_ID           0x1934  /* Manufacturers ID */
+#define SIO_F71808_ID           0x0901  /* Chipset ID */
 #define SIO_F71858_ID           0x0507  /* Chipset ID */
 #define SIO_F71862_ID           0x0601  /* Chipset ID */
 #define SIO_F71882_ID           0x0541  /* Chipset ID */
@@ -96,9 +97,10 @@ static unsigned short force_id;
 module_param(force_id, ushort, 0);
 MODULE_PARM_DESC(force_id, "Override the detected device ID");
 
-enum chips { f71858fg, f71862fg, f71882fg, f71889fg, f8000 };
+enum chips { f71808fg, f71858fg, f71862fg, f71882fg, f71889fg, f8000 };
 
 static const char *f71882fg_names[] = {
+        "f71808fg",
         "f71858fg",
         "f71862fg",
         "f71882fg",
@@ -306,8 +308,8 @@ static struct sensor_device_attribute_2 f71858fg_in_temp_attr[] = {
         SENSOR_ATTR_2(temp3_fault, S_IRUGO, show_temp_fault, NULL, 0, 2),
 };
 
-/* Temp and in attr common to the f71862fg, f71882fg and f71889fg */
-static struct sensor_device_attribute_2 fxxxx_in_temp_attr[] = {
+/* In attr common to the f71862fg, f71882fg and f71889fg */
+static struct sensor_device_attribute_2 fxxxx_in_attr[] = {
         SENSOR_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0),
         SENSOR_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 0, 1),
         SENSOR_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 0, 2),
@@ -317,6 +319,22 @@ static struct sensor_device_attribute_2 fxxxx_in_temp_attr[] = {
         SENSOR_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 0, 6),
         SENSOR_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 0, 7),
         SENSOR_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 0, 8),
+};
+
+/* In attr for the f71808fg */
+static struct sensor_device_attribute_2 f71808_in_attr[] = {
+        SENSOR_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0),
+        SENSOR_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 0, 1),
+        SENSOR_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 0, 2),
+        SENSOR_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 0, 3),
+        SENSOR_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 0, 4),
+        SENSOR_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 0, 5),
+        SENSOR_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 0, 7),
+        SENSOR_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 0, 8),
+};
+
+/* Temp attr common to the f71808fg, f71862fg, f71882fg and f71889fg */
+static struct sensor_device_attribute_2 fxxxx_temp_attr[] = {
         SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 1),
         SENSOR_ATTR_2(temp1_max, S_IRUGO|S_IWUSR, show_temp_max,
                 store_temp_max, 0, 1),
@@ -355,6 +373,10 @@ static struct sensor_device_attribute_2 fxxxx_in_temp_attr[] = {
                 store_temp_beep, 0, 6),
         SENSOR_ATTR_2(temp2_type, S_IRUGO, show_temp_type, NULL, 0, 2),
         SENSOR_ATTR_2(temp2_fault, S_IRUGO, show_temp_fault, NULL, 0, 2),
+};
+
+/* Temp and in attr common to the f71862fg, f71882fg and f71889fg */
+static struct sensor_device_attribute_2 f71862_temp_attr[] = {
         SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0, 3),
         SENSOR_ATTR_2(temp3_max, S_IRUGO|S_IWUSR, show_temp_max,
                 store_temp_max, 0, 3),
@@ -989,6 +1011,11 @@ static struct f71882fg_data *f71882fg_update_device(struct device *dev)
                                 data->temp_type[1] = 6;
                                 break;
                         }
+                } else if (data->type == f71808fg) {
+                        reg  = f71882fg_read8(data, F71882FG_REG_TEMP_TYPE);
+                        data->temp_type[1] = (reg & 0x02) ? 2 : 4;
+                        data->temp_type[2] = (reg & 0x04) ? 2 : 4;
+
                 } else {
                         reg2 = f71882fg_read8(data, F71882FG_REG_PECI);
                         if ((reg2 & 0x03) == 0x01)
@@ -1871,7 +1898,8 @@ static ssize_t store_pwm_auto_point_temp(struct device *dev,
 
         val /= 1000;
 
-        if (data->type == f71889fg)
+        if (data->type == f71889fg
+         || data->type == f71808fg)
                 val = SENSORS_LIMIT(val, -128, 127);
         else
                 val = SENSORS_LIMIT(val, 0, 127);
@@ -1974,8 +2002,28 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
                         /* fall through! */
                 case f71862fg:
                         err = f71882fg_create_sysfs_files(pdev,
-                                        fxxxx_in_temp_attr,
-                                        ARRAY_SIZE(fxxxx_in_temp_attr));
+                                        f71862_temp_attr,
+                                        ARRAY_SIZE(f71862_temp_attr));
+                        if (err)
+                                goto exit_unregister_sysfs;
+                        err = f71882fg_create_sysfs_files(pdev,
+                                        fxxxx_in_attr,
+                                        ARRAY_SIZE(fxxxx_in_attr));
+                        if (err)
+                                goto exit_unregister_sysfs;
+                        err = f71882fg_create_sysfs_files(pdev,
+                                        fxxxx_temp_attr,
+                                        ARRAY_SIZE(fxxxx_temp_attr));
+                        break;
+                case f71808fg:
+                        err = f71882fg_create_sysfs_files(pdev,
+                                        f71808_in_attr,
+                                        ARRAY_SIZE(f71808_in_attr));
+                        if (err)
+                                goto exit_unregister_sysfs;
+                        err = f71882fg_create_sysfs_files(pdev,
+                                        fxxxx_temp_attr,
+                                        ARRAY_SIZE(fxxxx_temp_attr));
                         break;
                 case f8000:
                         err = f71882fg_create_sysfs_files(pdev,
@@ -2002,6 +2050,7 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
                 case f71862fg:
                         err = (data->pwm_enable & 0x15) != 0x15;
                         break;
+                case f71808fg:
                 case f71882fg:
                 case f71889fg:
                         err = 0;
@@ -2047,6 +2096,7 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
                                         f8000_auto_pwm_attr,
                                         ARRAY_SIZE(f8000_auto_pwm_attr));
                         break;
+                case f71808fg:
                 case f71889fg:
                         for (i = 0; i < nr_fans; i++) {
                                 data->pwm_auto_point_mapping[i] =
@@ -2126,8 +2176,22 @@ static int f71882fg_remove(struct platform_device *pdev)
                         /* fall through! */
                 case f71862fg:
                         f71882fg_remove_sysfs_files(pdev,
-                                        fxxxx_in_temp_attr,
-                                        ARRAY_SIZE(fxxxx_in_temp_attr));
+                                        f71862_temp_attr,
+                                        ARRAY_SIZE(f71862_temp_attr));
+                        f71882fg_remove_sysfs_files(pdev,
+                                        fxxxx_in_attr,
+                                        ARRAY_SIZE(fxxxx_in_attr));
+                        f71882fg_remove_sysfs_files(pdev,
+                                        fxxxx_temp_attr,
+                                        ARRAY_SIZE(fxxxx_temp_attr));
+                        break;
+                case f71808fg:
+                        f71882fg_remove_sysfs_files(pdev,
+                                        f71808_in_attr,
+                                        ARRAY_SIZE(f71808_in_attr));
+                        f71882fg_remove_sysfs_files(pdev,
+                                        fxxxx_temp_attr,
+                                        ARRAY_SIZE(fxxxx_temp_attr));
                         break;
                 case f8000:
                         f71882fg_remove_sysfs_files(pdev,
@@ -2195,6 +2259,9 @@ static int __init f71882fg_find(int sioaddr, unsigned short *address,
 
         devid = force_id ? force_id : superio_inw(sioaddr, SIO_REG_DEVID);
         switch (devid) {
+        case SIO_F71808_ID:
+                sio_data->type = f71808fg;
+                break;
         case SIO_F71858_ID:
                 sio_data->type = f71858fg;
                 break;